云南萨尔温江水系3条一级支流鱼类区系存在度及其在鱼类保护区设置中的意义

周伟1 李旭1 李凯媛1 李明会1

(1.西南林业大学云南省森林灾害预警与控制重点实验室, 昆明 650224)

【摘要】将经典动物区系与区系存在度分析方法相结合, 探讨云南萨尔温江水系的南滚河、南汀河及勐波罗河3条一级支流的鱼类多样性相对于萨尔温江中游水系鱼类的代表性, 比较其鱼类区系存在度差异, 分析区系组成特征及科、属在区系建成中的重要性, 旨在探讨区系存在度指标对鱼类保护区设置的指导作用。结果显示, 萨尔温江中游水系 (云南段) 共记录土著鱼类74种, 分隶于5目12科45属。3条支流共有土著鱼类53种, 分隶于5目12科38属, 其中南滚河鱼类有9科23属32种, 南汀河有11科33属47种, 勐波罗河有10科26属33种。按种类的绝对数排序, 3条支流均是鲤科、鮡科和条鳅科排前3位。而按区系存在度结果排序, 均是鳗鲡科、鳢科、刺鳅科、合鳃鱼科和鮡科等5个科位列前5位。两种方法排序结果显示, 3条支流表现出完全的一致性。同一属级分类阶元的区系存在度在不同支流间变异较大, 属级和种级分类阶元的地域性分布特点渐趋明显。这3条一级支流鱼类均是以老第三纪原始类群为主体, 南方类群次之, 还有少量青藏高原类群。结合鱼类区系存在度研究结果, 在设置淡水鱼类保护区时, 应考虑在大水系的上中下游分别选择1条或多条一级支流建立保护区;如果目、科级存在度高的阶元在鱼类保护区规划时涵盖得多, 则保护了较多的高级阶元, 但并非是必须考虑的阶元;而属级存在度值则是保护区规划时需要特别关注的事项。

【关键词】 鱼类区系; 区系存在度; 生物多样性; 鱼类自然保护区; 萨尔温江水系;

【DOI】

【基金资助】 国家自然科学基金 (31160419) 云南省林学一流学科建设项目 (51600625)

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    脚注

    [1]. (1) 陈小勇, 蒋万胜, 杨君兴 (2003) 第10章鱼类.见:云南省林业调查规划设计院等.中国云南永德国家级自然保护区综合科学考察报告 (手稿) . [^Back]

    [2]. (2) 周伟, 杨琴, 刘恺, 徐万吉 (2012) 第13章鱼类.见:杜凡等.云南南捧河省级自然保护区综合科学考察报告 (手稿) . [^Back]

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This Article

ISSN:1005-0094

CN: 11-3247/Q

Vol 24, No. 10, Pages 1146-1153

October 2016

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Article Outline

摘要

  • 1 材料与方法
  • 2 结果
  • 3 讨论
  • 附录Supplementary Material
  • 脚注

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